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PhysicsJEE Main 23 Jan 2026, Shift 1·Q9·MCQ·Easy–moderate

Current Electricity · Current and resistance

A wire of uniform resistance λ Ω\lambda\ \Omega/m is bent into a circle of radius r and another piece of wire with length 2r is connected between points A and B (AOB) as shown in figure. The equivalent resistance between points A and B is Ω\Omega.
  1. (1)3πλr8\dfrac{3\pi\lambda r}{8}
  2. (2)(π+1) 2rλ(\pi + 1)\,2r\lambda
  3. (3)6πλr3π+16\dfrac{6\pi\lambda r}{3\pi + 16}
  4. (4)2πλr2\pi\lambda r

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